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Endoscopic ultrasonography for pancreatic solid lesions

  • Special Feature: Review Article
  • Ultrasonographic diagnosis of pancreatic diseases-This is all you need
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Abstract

The incidence and mortality rates of pancreatic cancer, which has a poor prognosis, are rising rapidly. Endoscopic ultrasonography (EUS) provides superior spatial resolution compared with other imaging modalities such as transabdominal ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), and it is considered among the most reliable and efficient diagnostic modalities for pancreatic diseases. In this review, we show that EUS is useful for detection of pancreatic solid lesions and staging of pancreatic cancer. EUS also plays an important role in screening patients with high-risk factors for pancreatic cancer. Although EUS is useful for detection of small pancreatic lesions, pancreatic lesions are difficult to characterize using this modality, because most pancreatic solid lesions appear hypoechoic on EUS. From this point of view, contrast-enhanced harmonic EUS (CH-EUS) plays an important role in the differential diagnosis of pancreatic lesions. EUS and CH-EUS are also useful for staging pancreatic cancer. Moreover, EUS-guided fine-needle aspiration (EUS-FNA) is superior to other modalities in terms of cytopathological diagnosis. Although EUS-FNA has a high diagnostic ability for pancreatic cancer, the combination of EUS-FNA and CH-EUS improves the diagnostic ability by decreasing the number of false-negative cases. Thus, conventional EUS, EUS-FNA, and CH-EUS are essential in clinical practice for the diagnosis of pancreatic solid lesions.

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Acknowledgements

The present study was supported by grants from the Japan Society for Promotion of Science.

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  1. Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan

    Yasunobu Yamashita & Masayuki Kitano

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  1. Yasunobu Yamashita
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  2. Masayuki Kitano
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Correspondence to Masayuki Kitano.

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Masayuki Kitano has received honoraria for speaking lectures at conferences from Olympus Corporation.

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Yamashita, Y., Kitano, M. Endoscopic ultrasonography for pancreatic solid lesions. J Med Ultrasonics 47, 377–387 (2020). https://doi.org/10.1007/s10396-019-00959-x

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